Man, guys, don't bitch about metal elitism. At least not in the sense of someone not wanting to play Pelican on a metal show. There are definitely times when metal elitism becomes utterly ridiculous and stagnatory (Just look how boring black metal was in the late 90's) but it comes from a very understandable place. It's a natural reaction to people who have no fucking idea what the hell metal is about trying to invade our subculture all the fucking time. Whether its teens at one end who think that Coalchamber and KoRn are metal, or hipsters at the other end who think they're diverse because they listen to things like The Sword and Goblin Cock, which is pretty much the equivalent of me saying I'm into rap because I like a couple of Goldie Lookin' Chain songs. Yeah, maybe you like to sneer at the excesses of metal fandom, and call it staid, conservative, elitist, whatever, but there's a lot of people out there, me included, who really fucking enjoy metal and the experiences associated with it. It is, after all, our fucking subculture. We're the ones who made it up, and we're the ones who keep it going. If you're not a metalhead, you don't even have the right to moan about some DJ refusing to play Isis or whatever.
All those bands you mentioned suck anyway. Good call, mr. Metal DJ!